My husband drinks 5 hour energy extra strength on a

Patient: My husband drinks 5 hour energy extra strength on a daily basis and had for years and sometime 2-3 a day as well as all other liquids he consumes through the day are caffeinated. He also smoke a pack of cigarettes a day. How dangerous is this? I have begged him to change his habits but he won’t listen. He is now 37 and I’m afraid it’s gonna kill him!

Doctor: